* gdb.t00/teststrategy.exp: Track reversion in gdb to not print

	* gdb.t00/teststrategy.exp:  Track reversion in gdb to not print
	the null byte at the end of strings.
	* gdb.t00/default.exp:  Make show version insensitive to copyright
	date.
	* gdb.t16/in-gdbme.c (ctable1, ctable2):  Make explicitly unsigned
	to avoid dependencies on target char signedness.
	* gdb.t16/printcmds.exp:  Update expected results for explicitly
	unsigned char.
	* gdb.t16/printcmds.exp:  Remove setup_xfails for i960 that should
	now work.
	* gdb.t21/demangle.exp:  Add many more patterns for template
	demangling, most of them being expected failures.
	* gdb.t21/demangle.exp (proc demangle):  Quote the demangled
	string we are matching for, to match on the whole string.
	* gdb.t21/demangle.exp:  Add many new test strings to demangle,
	and fix a whole bunch that had incorrect expected output but were
	passing anyway because of the bug in "proc demangle".
	**** start-sanitize-chill ****
	* gdb.t31/chillvars.exp:  Remove setup_xfail for printing string
	type.
	* gdb.t31/in-gdbme.ch:  Uncomment string4, now compiles.
	**** end-sanitize-chill ****